Ore-feeder.



110. 795,923. PATENTED AUG.1,^1905.

M. NELSON;

ORE FEEDER.

` APPLIOATIONTILBD AUG.15, 1904.

A Figl UNITED STATES PATENT OFFICE.v

MARTIN NELSON, OF KALGOORLIE, WESTERN AUSTRALIA, AUSTRALIA.

O R E F E E D E R Specification of Letters Patent.

Patented Aug. 1, 1905.

Application filed August 15,1904. Serial No. 220,808.

Beit known that I, MARTIN NELsoN, mininfr engineer, a subject of His Majesty King Edward VH, residing at Kalgoorlie, in the State of Western Australia, Australia, have invented new and useful Improvements in Ore-Feeders, of which the following is a speciication.

This invention relates to improvements to ore-feeders such as are used in stamper-batteries and the like, wherein it is required to feed ore or dry pulp into the machine in such quantities as are necessary to replenish the supply of ore or dry pulp as it is consumed or treated by the machine.

The chief obj ect aimed at in this invention is to have an automatically-regulatin orefeeder of such simplicity that it wil not easily get out of order, the working and wearing parts being reduced to the smallest possible number.

In order that this invention may be the better understood both as regards construction and the method of operation, I shall now proceed to. describe the same by the aid of the accompanying illustrations, in which- Figure 1 is a perspective view of the whole machine when fitted up in working order. Fig. 2 is a front elevation of the lever-gripper. Fig. 3 is an end elevation of the lever-gripper. Fig. 4 is a detail of the lever-gripper, feedingarm, and retention-bolt. Fig. 5 is a sectional plan of the lever-gripper, feeder-arm, and retention bolt and spring and the retentionspring bracket.

Throughout the drawings similar letters of reference are used to denote corresponding parts wherever they occur.

In this respect, A is the feeder-table, and B the guide-wings set on the top of the table to guide the ore or pulp into the machine which it is desired to feed.

E is a frame upon which the machine is constructed and which has a hub or socket F, into which a spindle or pivot of the table A fits in such a manner that it will easily revolve in the socket. Into the bottom of the hub or socket is fitted a set-screw G, which has a point coming in contact with the center of the spindle or pivot. This screw G will serve to adjust the table and keep it close against the bottom edge of the wings, thus permitting any Wear to be taken up when required. A rocker-shaft S is fitted to the frame by means of brackets or bearings which support it in a horizontal position.

This

| rocker-shaft S has an arm C reaching forward to carry the buffer-rod D, and to the other end of the rocker-shaftis attached anthe point Z. There is also a short arm R attached to this rocker-shaft, which, acted upon by the screw P, serves to regulate the quantity or ore that shall enter the battery or other machine at any given time, which is effected by limiting the stroke of the feedingarm H.

On the edge of the table is placed a levergripper, as K, with a jaw, as Y, to fit on the edge of the table A. The lower end of the lever-gripper simply rests against or in the fork of the feeding-arm H and 1s held against it by a retention-bolt N and a retention-spring M,

\ which is supported in a bracket L, attached to the side of the frame E.

The feeder is suspended in position to the beams W by the suspension-rods X, and the ore is conveyed to it by the chute V.

The method of operating my invention'is as follows: The feeder being attached to a stamper-battery or other machine in such a position that the buffer-rod D is directly under the tappet to receive the motion from the shank of the battery or the like, and ore or pulp is run into the feeder by means of the chute V. Then the shank of the battery dropping the tappet will strike the buffer-rod I) and depress the arm C, thus partially revolving the rocker-shaft S, which thus imparts motion to the feeding-arm H, which in its turn strikesV the lever-gripper K near the bottom and the retention-spring M and bolt N retaining the top part of the 0rripper K, so that it grips the edge of the table A and carries it round a short distance, and the wingplate B will thus push a small portion of the ore or pulp off the table into the machine, where it is required to place it. By adjusting the screw P the amount of motion required may be obtained.

In the event of the wing-plates B or the table A wearing andallowi-nor a space between them for the ore to escape the table A may be raised byv adjusting the screw G, the levergrippler K being made long enough to allow for t e table being raised when required.

I am aware that certain portions of this appliance have been used for the same purpose prior to my invention; but my claims shall include only those portions which are new and novel as applied to ore-feeders and the like.

Having now particularly described and ascertained the nature of my invention and in what manner the same is to be performed, I

- for adjusting said table toward and away from said wings.

2. An improved ore-feedercomprising an ore-chute, a rotatively-mounted receivingtable located at the discharge end of said chute, guide-wings for said table secured to the discharge end of the chute and-projecting outwardly therefrom abreast of said table, and means for adjusting said table toward and away from said wings. l

3. An ore-feeder comprising a rotativelymounted table, guide wings projecting abreast thereof, means Afor intermittently rotating said table, and means for adjusting said table toward and away from said wings.

4. An ore-feeder comprising a rotativelymounted table, guide wings projecting abreast thereof, and means for adjusting said table toward and away from said wings.

5. An ore-feeder comprising a rotativelym'ounted table, a supporting-frame therefor provided with a hub, a spindle for said table seated in said hub, a set-screw for said hub engaging the spindle whereby the table may be adjusted toward and away from said wings.

6.Y An ore-feeder comprising a chute, a rotatively-mounted table located at the discharge end of said chute, a supporting-frame for said table, guide-wings for said table, a hub on said supporting-frame, a spindle for said table, and a set-screw for said hub engaging the spindle of said table whereby the table may be adjusted toward and away from said wings.

7. An ore-feeder comprisinr an ore-chute, a rotatively-mounted table lIocated at the discharge end of said chute, a supportingframe, a hub for said frame, a spindle for said table seated in said hub, a set-screw for said hub engagingsaid spindle and serving to raise and lower the table, guide-wings for said table secured to the discharge end of the chute and projecting outwardly abreast of said table, a gripping-arm frictionally engaging the periphery of said table, a springactuated rod secured 'to said gripping-arm and normally holding the same in a nongripping position, a rock-shaft arm engaging said gripping-arm to thrust the same into a gripping position to rotate the table, a rockshaft secured to said rock-shaft arm, and means for rocking said shaft.

8. An ore-feeder comprisinoP an ore-chute, a rotatively-niounted table tlocated at the discharge end of said chute, a supportingframe, guide-wings for said table secured to the discharge end of the chute and projecting outwardly abreast of said table, means for adjusting the table toward and away from. said wings, a gripping-arm frictionally engaging the periphery of said table, a springactuated rod secured to said gripping-arm and normally holding the same in a nongripping position7 a rock-shaft arm engaging said gripping-arm to thrust the same into a gripping position to rotate the table, a rockshaft secured to said rock-shaft arm, and means for rocking said shaft.

In testimony whereof I affix my signature in presence of two witnesses.

MARTIN NELSON. Witnesses:

ROBERT VILLIAM HALL, MATTHEW HENRY MURRAY. 

